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| author | Jan Kara <jack@suse.cz> | 2008-01-11 00:11:45 +0100 |
|---|---|---|
| committer | Mark Fasheh <mark.fasheh@oracle.com> | 2008-01-25 15:05:44 -0800 |
| commit | 5fa0613ea58a80f69852b242337121bd39dc798e (patch) | |
| tree | 21170694624428a8903efc6cba843fd10de93c64 /fs/ocfs2/inode.c | |
| parent | 53fc622b9e829c8e632e45ef8c14f054388759c1 (diff) | |
| download | lwn-5fa0613ea58a80f69852b242337121bd39dc798e.tar.gz lwn-5fa0613ea58a80f69852b242337121bd39dc798e.zip | |
ocfs2: Silence false lockdep warnings
Create separate lockdep lock classes for system file's i_mutexes. They are
used to guard allocations and similar things and thus rank differently
than i_mutex of a regular file or directory.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2/inode.c')
| -rw-r--r-- | fs/ocfs2/inode.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c index 00cd5b7f3e52..5e19c119183d 100644 --- a/fs/ocfs2/inode.c +++ b/fs/ocfs2/inode.c @@ -57,8 +57,11 @@ struct ocfs2_find_inode_args u64 fi_blkno; unsigned long fi_ino; unsigned int fi_flags; + unsigned int fi_sysfile_type; }; +static struct lock_class_key ocfs2_sysfile_lock_key[NUM_SYSTEM_INODES]; + static int ocfs2_read_locked_inode(struct inode *inode, struct ocfs2_find_inode_args *args); static int ocfs2_init_locked_inode(struct inode *inode, void *opaque); @@ -106,7 +109,8 @@ void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi) oi->ip_attr |= OCFS2_DIRSYNC_FL; } -struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, int flags) +struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags, + int sysfile_type) { struct inode *inode = NULL; struct super_block *sb = osb->sb; @@ -126,6 +130,7 @@ struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, int flags) args.fi_blkno = blkno; args.fi_flags = flags; args.fi_ino = ino_from_blkno(sb, blkno); + args.fi_sysfile_type = sysfile_type; inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor, ocfs2_init_locked_inode, &args); @@ -200,6 +205,9 @@ static int ocfs2_init_locked_inode(struct inode *inode, void *opaque) inode->i_ino = args->fi_ino; OCFS2_I(inode)->ip_blkno = args->fi_blkno; + if (args->fi_sysfile_type != 0) + lockdep_set_class(&inode->i_mutex, + &ocfs2_sysfile_lock_key[args->fi_sysfile_type]); mlog_exit(0); return 0; |